MGN-3/Biobran is an arabinoxylan extracted from rice bran that is treated enzymatically with an extract from Shiitake mushrooms. MGN-3 demonstrated anti-cancer activity in vivo in mice and humans. The present study was carried out to examine whether combining the current conventional treatment with a food supplement, arabinoxylan rice bran (MGN-3/Biobran), may improve the outcome of the disease and increase the survival rate of patients with HCC or HBV. We hypothesize that a combinatory treatment of conventional therapy with MGN-3/Biobran will augment the therapeutic effect seen when patients are treated with conventional therapy alone.